Apparatus for gauging material



1962 E. J. BOLING 3,059,674

APPARATUS FOR GAUGING MATERIAL Filed April 18, 1957 '3 Sheets-Sheet 1INVENTOR.

EDGAR J. BOLING MQ J AT TORNEMY Oct. 23, 1962 E. J. BOLING 3,059,674

APPARATUS FOR GAUGING MATERIAL Filed April 18, 1957 3 Sheets-Sheet 2 45I23 35 44 .3; 4o 53 5o III]. lllllll I 2 I38\ ICIO g 120 INVENTOR.

EDGAR J. BOLI NG AT TORNEY Oct. 23, 1962 E. J. BOLING APPARATUS FORGAUGING MATERIAL 3 Sheets-Sheet 3 Filed April 18, 1957 INVENTOR.

J. BOLI NG EDGAR ATTORNEY United States Patent Ofifice 3,059,674Patented Oct. 23,1962

3,059,674 APPARATUS FOR GAUGING IldATERIAL Edgar J. Bolling, (Ioluznbus,Ohio (R0. Box 250, Rte. 1, Beaver, Ohio) Filed Apr. 18, 1957, Ser. No.653,697 7 Claims. (ill. 143-4174) The inventions disclosed and/orillustrated in this application relate to apparatus for the fabricationof window frames, as for example, for storm windows; to means forcomputing the required length of individual component members of suchframes; to means for gauging and cutting framing materials to the lengthso computed; to means of computing unknown lengths, required forcomponent frame members, from the given dimensions of a prime windowopening; and means of gauging and cutting such members to the length socomputed. My inventions are illustrated as applicable to storm windows.

It has been the general practice in the past for manu-" facturers ofprime window frames to work from standard glass sizes. Little or noattention is given to the standardization of the resulting prime windowopening to which a storm window must ultimately be fitted. The heightand width dimensions of existing prime window openings tend to varywithin considerable limits as a result of various framing practices,various individual standards and manufacturing practices followed byindi vidual manufacturers of prime windows; and as a result of the typeand design of the sill or lintel which is incorporated in the primewindow installation in a building. There has been no appreciablestandardization of the dimensions of the window openings for which stormwindows are now being manufactured.

Conversely, storm windows must be produced in volume if their use is tobe economically feasible. As a result it has been the common practice inthe past to fabricate storm windows to standardized dimensions whichrepresent averages of the various dimensions whichoccur most frequentlyin prime window openings. When storm windows produced by such methodsare installed one of three costly procedures is followed in an effort toachieve an approximate fit between the storm window and the primeopening: 1) A storm window larger than the prime opening is planed tofit the opening, or (2) the prime opening must be shimmed or furred tothe dimensions of the storm window, or (3) a storm window must beshimmed, furred or similarly fitted to the actual dimensions of theprime opening, or (4) the storm window is so designed as to have anoverlapping frame. The last two methods increase costs by the use ofadditional material. Wide conspicuous frames are undesirable forappearances.

The planing process is so costly and inconvenient as to be impracticalwhen applied to storm windows having metal frames, and increasesinstallation costs and damages the storm windows. Shims or furringstrips are costly and time-consuming to install, tend to multiply theproblem of calking the installation to render it weather tight, and areoften subject to rapid deterioration in use.

While it has heretofore been the common practice among manufacturers ofstorm windows to fabricate them to measurements exceeding by varyingamounts the window manufacturers standard glass sizes, the inventorherein proposes as an innovation to fabricate such storm windowsaccording to prime window opening dimensions.

When custom fabricating a storm window to the approximate overall heightand width dimensions of the prime window opening for which it isintended, it is necessary that the length of each component member ofthe frame for such a window be individually combut puted from thedimensions of the prime window opening. Such computations whenaccomplished by previously known methods are time consuming and subjectto frequent costly errors which result in wasted materials and effort,and tend to make such custom fabricating methods uneconomical to use. Noother apparatus or method known to me has heretofore provided either ameans or a method whereby storm windows can be fabricated to theapproximate overall dimensions of a prime opening without costly andtime consuming manual computation of the length dimension of eachframing com ponent of such a window.

Objects One of the objects of my invention is to provide an apparatusfor computing by mechanical means the length dimensions of all framemembers from given overall length and width dimensions of a prime windowopening.

Another object of my invention is to provide an apparatus for gaugingmaterials to a computed length and for accurately cutting said materialsto such length.

A further object of my invention is to provide mechanical apparatus forcomputing various length dimensions of extruded frame members, which isequally effective and advantageous when used in the production of stormwindows of a predetermined size as well as in the custom fabrication ofsuch windows.

A further object of my invention is to provide novel and economicalmeans for computing, gauging and cutting to length, accurately andquickly, the component members of frames having variable overall orprofile dimensions.

Further objects and features of the invention will be apparent from thesubjoined specification and claims when considered in connection withthe attached drawings.

Drawings In the drawings which disclose a preferred embodiment of myinvention:

FIG. 1 is a top plan view of a computing and gauging apparatus inoperating position on a work supporting surface, with a piece of framingmaterial shown in dashed lines and with the mutually intersecting planesof operation of three cooperating cutting devices shown as dotdashlines;

*FIG. 2 is a view in side elevation of the apparatus of FIG. 1;

FIG. 3 is a sectional view of taken along line 3-3;

FIG. 4 is a sectional view FIG. 1 taken along line 4-4;

FIG. 5 is a view in side elevation of a portion of FIG.

the block of FIG. 1,

of the material stop of 2 here shown on an enlarged scale with otherportionsv FIG. 9 is a view similar to FIG. 6 showing a spacer block ofdifferent proportions interposed between the spacing screw and the stopshoulder;

FIG. 10 is a plan view of an assembled storm window of conventionaltwo-track configuration;

FIG. 11 is a sectional view of the storm window of FIG. 10 taken alongthe line 1111;

FIG. 12 is a plan view of the lower portion of the main frame of thestorm window of FIG. as seen at one state in the assembly process;

FIG. 13 is a sectional view taken on the line 13-43 of FIG. 1 andshowing an alternative embodiment of the material stop of FIG. 5; and

FIG. 14 is a view similar to FIG. 9 showing two spacer blocks interposedbetween the spacing screw and the stop shoulder.

The philosophy of my invention is that the overall dimension of a windowmanufactured under my invention need be fairly accurate in order to fitthe opening, but the differences in lengths between the interfitting andcooperating parts must be extremely accurate so that the parts may beassembled correctly. Thus the first overall dimension in width (or inlength) may be measured and cut from a visual and rule or tapemeasurement accurate to l6ths or 32nds of an inch, but the differencesbetween this first measurement and the width or length of cooperatingparts must be determined very accurately so that visual measurement byrules or tapes is not sufficient, but extremely accurate gauge blocksaccurate to thousandths of an inch should be used. Lengths of componentparts in windows of mitered construction are not only controlled by thesize of the window but also by the profile dimensions of the materialused or the difference in the dimensions of the profiles of adjacentparts.

Detailed Description Referring to the drawings for a detaileddescription of an embodiment of my invention illustrated, it may be seenthat I have shown generally in FIG. 1, a guaging and mitering apparatuswhich consists of a suitable work supporting surface 15 of planeconfiguration; a guide bar longitudinally disposed along one edge 19 ofsaid surface 15 and rigidly secured thereto by suitable means; asuitable material feed guide a block, generally designated as 30,slidably secured to guide bar 20; a material stop 40, slidably embracingguide bar 20; and spacer blocks 50 adapted to be at times interposedbetween an element of block and an element of stop 40, each of which isdescribed hereafter in detail.

A plurality of suitable cutting devices, as for instance saws (notshown), are secured to surface 15 by appropriate means so that saiddevices will be at times operable (either individually or in unison)within cutting planes 16, 17 and 18 (FIGS. 1 and 2) for cutting framingmaterials as for example material 21 which is positioned on surface 15for gauging and cutting purposes. Said planes 16, 17 and 18 are mutuallytangent along a line which passes through a point adjacent edge 19 ofsurface Y 15 so as to be perpendicular with the plane of said surface15.

Block means 30 is formed of suitable material to the generalconfiguration illustrated in FIGS. 2 and 3, with a channel 31longitudinally disposed in the lower face 37 of block 30 and inintercommunication with opposite faces 38 and 39 of block 30. Thecross-sectional configuration of said channel 31 (FIG. 3) is in closeconformity with that of guide bar 20 and said channel 31 is ofsufficient dimensions to permit block 30 to be at times slidablelongitudinally of guide bar 20. Block 30 is further formed with athreaded bore 32 extending longitudinally through said block 30 inintercommunication with opposite faces 38 and 39, said bore 32 lyingparallel with channel 31. Another threaded bore 33 is laterally disposedin block 30 in intercomrnuncation between outer wall 29 of block 30 anda lateral wall of channel 31. Setscrew 34 is of suitable size and threadto be threadably engaged in threaded bore 33 for securing block 30 toguide bar 20. Vertically extending opening 37 is of appropriateconfiguration and intercommunicates with upper face 28 of block 30 andthe upper wall of channel 31 to serve as the inspection port throughwhich the calibrations 23 on guide bar 20 may be read. Pointer 27 is ofsuitable size and configuration and is fixedly secured by suitable meanswithin a lateral bore of block 30 so as to extend into opening 37 anappropriate distance.

Material stop 40 is formed to the general configuration shown in FIGS.1, 2, 4 and 5 with channel 41 extending along its lower face 47 so as tointercommunicate with opposite vertical faces 48 and 49 of stop 40.Channel 41 has a cross-sectional shape similar to that of channel 31 ofblock 30 for slidably embracing guide bar 20. Material stop 40 isfurther formed with a material engaging portion 46, projecting fromforward face 48 (FIG. 1), said portion 46 having an angularly disposedstop face 43 of plane configuration which is disposed perpendicular tolower face 47 of stop 40 and which intersects one lateral wall 59 ofsaid channel 41 so as to form an angle therewith which is the supplementof the smaller of the angles formed by the intersection of cutting plane18, and guide face 24 of guide bar 20. Material stop 40 is also formedwith a spacer block shelf 42 (FIG. 5) disposed adjacent to rear wall 49,parallel with lower face 47 displaced from said face 47 a distance lessthan the shortest distance between the major diameter of threaded bore32 of block 30 and lower face 37 of said block 30. Material stop 40 isfurther formed with a vertically extending shoulder portion 44- having arearwardly disposed shoulder face which intersects shelf 42 so as to lieperpendicular thereto and said face 45 also lies in a planeperpendicular to the longitudinal axis of said channel 41.

Spacing screw 35 (FIG. 1) has an appropriate diameter and thread to bethreadably engaged in said threaded bore 32 of block 30 and is ofsufiicient length to extend through block 30 and to project therefrom adistance greater than the length of spacer shelf 42, as measured along aline parallel with the axis of channel 41 of material stop 40. Saidscrew 35 is provided with a suitable head 36 for rotating screw 35within threaded bore 32 and a locking nut 26 for locking screw 35 in anyposition with respect to block 30.

Spacer blocks generally designated as 50 (FIG. 6) comprise a pluralityof gauge blocks 51, 52, 53 and 54 each being parallelopiped inconfiguration, having two common dimensions and the third dimension(hereafter called the effective width) of each said block being anappropriate dimension which is determined by the variations between theoverall length dimensions of two component elements of a storm windowframe as will be described in detail hereafter.

The upwardly disposed face 22 (FIG. 1) of guide bar 20 is provided witha scale 23 for indicating linear distance as measured along materialguide face 24. Scale 23 is so calibrated that a linear dimensioncorresponding to that of a prime window opening (such as eitherdimension X or Y of FIG. 10) is in register with pointer 27 of block 30when the actual distance, measured along guide face 24, between cuttingplane 18 and material stop face 43 is equal to the longest dimension ofthe longest frame member which is to be cut from said dimension of aprime window opening, as for example dimension Z (FIG. 12) of member 61which is cut from horizontal dimension Y (FIG. 10) of prime windowopening 100.

Alternatively the material stop shown in the rear elevational view ofFIG. 13 may be incorporated in the apparatus previously described formaintaining specific sets of gauge blocks 138 and 139 in orderlyarrangement and thereby simplify and speed the operation of theapparatus. Material stop 120 is identical with material stop 40 (FIG. 4)and is formed with longitudinal channel 121, forwardly extendingmaterial engaging portion 126, gauge block shelf 12?. perpendicular toand extending rearwardly from rearwardly disposed shoulder face ofvertical shoulder portion 124. Material stop 120 (FIG. 13) differs fromstop 40 (FIG. 4) in that a plurality of spacer block retaining means areprovided, as for instance spacer guide rods 123. Said rods 123 arerigidly secured to shoulder portion 124 of material stop 120 and projectrearwardly from face 125 so as to extend parallel with shelf 122 and tobe spaced vertically therefrom.

Spacer blocks 131, 132 a: 1. 133 are each provided with an elongatedslot 128 which extends through the effective width of said spacer blockso as to be in intercommunication with both the forward and rear facesof each said spacer block 131, 132 and 133. Slots 128 are so dimensionedas to permit a rod 123 to be slidable therein. A plurality of spacerblocks such as 131 and 132 are aligned in side by side relationshipalong a rod 123 so as to be slidably repositioned at times, eitherindividually or in series relationship, into the position of block 131with opposite faces in contact engagement respectively with shoulderface 125 and with the forwardly projecting end of spacing screw 35.

Collars 127 are slidable longitudinally of rods 132 and are securedthereto by means of suitable setscrews (not shown) for retainingprearranged sets of appropriate spacer blocks such as 133 and 139 inmutual side by side relationship on shelf 122 so .as to be reciprocallyslidable transversely thereof.

Operation The gauging and mitering apparatus described herein is used toeffective advantage in custom fabricating frames for storm windows tothe actual dimensions of the prime window opening in which thefabricated storm window is to be installed as well as in the productionof storm windows to predetermined standardized overall dimensions. Anillustrative storm window assembly of two track design is shown in FIGS.and 11 which comprises a main frame generally designated as 61) and anupper insert window frame 70, a lower insert window frame 8t) and aninsert screen frame 96 each of which is slidably retained within frame6% by suitable spring means 75 secured to main frame 66.

Individual component members of main frame 60 and insert frames 7t), 80and 90 are normally cut to the required length from extruded framingmaterials having the desired cross-sectional configuration. For purposesof illustration, specific cross-sectional width relationships betweenvarious framing components will be described hereinafter, based upon thespecific storm window structure illustrated in FIGS. 10, 11 and 12. Itis understood, however, that the described relationships will vary,depending on the type and configuration of the ultimate storm Windowassembly which is contemplated. In the gauging and cutting of a framecomponent by means of the apparatus of my invention, the verticaldimension X (FIG. 10) and the horizontal dimension Y are first obtainedfrom the prime window opening which is to be fitted with a storm window.

Referring generally to the apparatus of FIG. 1, block 39 is slidablypositioned longitudinally of guide bar 2i) with pointer 27 in registerwith the calibration of scale 23 which indicates a linear value equal tohorizontal dimension Y (FIG. 10) and block 30 is secured in suchposition by tightening setscrew 34 against guide bar 20. Spacing screw35 is then threaded through threaded bore 32 of block 3% sufficientlyfar for the forward end of screw 35 to project beyond face 38 .adistance greater than the previously described length of spacer shelf 42of material stop 49.

Stop 40 is slidably positioned longitudinally of guide bar 29 with stopface 43 directed toward cutting plane 18 and spaced therefrom a distance(measured along face 24 of guide bar 2%) equal to dimension Z (FIG. 12)of the longest horizontal frame member 61 to be cut from dimension Y(PEG. 1). Screw 35 is then rotated by means of head 36 to bring theforwardly projecting end of screw 35 into contact en agement with rearwall 45 of stop 40.

A suitable length of framing material extruded to the cross-sectionalconfiguration shown at 61 in FIG. 11 (or to such other cross-sectionalconfiguration as may be necessary to the structure of the ultimate stormwindow) is positioned on surface of FIG. 1 as indicated at detail end ofscrew 35 (FIG. 6) and said material 21 is then out along both lines ofintersection of cutting planes 16 and 18 to form a frame member 61 ofmain frame 6i) (FIG. 10).

Material stop 49 is repositioned along guide bar 20 in the direction ofcutting plane 18 a sufiicient distance to allow gauge block 51 to beinterposed (FIG. 7) between face 45 and screw 35 for separating saidface 45 and screw 35 by a distance equal to the effective width of block51.

Spacer block 51 is very accurately formed and has an effective widthequal to twice the difference between the overall cross-sectional widthof the material used in memher 61, as measured in the plane of FIG. 10,and the overall cross sectional width of the material from which member62 is to be formed.

A suitable length of appropriate material of configuration of member 62having a terminal edge out along the line of plane 16 is then positionedas at 21 (FIG. 1) in longitudinal engagement with guide bar 20 and withsaid terminal edge in engagement with face 43, face 45 of stop 40 beingin engagement with one face of spacer block 51 (FIG. 7) and the oppositeface of said spacer block 51 bearing upon the projecting end of screw35. This material is then out along the lines of cutting planes 16 and18 to form a member 62 and to form an angular terminal edge on theremaining length of the material.

Material stop 46 is again repositioned along guide bar 20 in thedirection of cutting plane 18 a distance sufiicient to allow spacerblock 52 to be interposed (FIG. 8) between spacer block 51 and screw 35.

Spacer block 52 (FIG. 8) has an effective width equal to the sum oftwice the cross-sectional width where inserts fit of the material fromwhich members 63 and 64 of frame 6t) will be formed (as describedhereafter) plus a suitable predetermined dimensional tolerance requiredto assure a snug but smoothly sliding fit between members 63 and 64 ofassembled main frame 60 and insert frames 70, and 90.

A length of material having appropriate cross-sectional configurationfor forming members 71, 72, 81, 82 and 91 and 92 of insert frames 70, 80and respectively, and having a leading terminal edge cut along the lineof plane 16, is then positioned as described above as at 21 with saidterminal edge in engagement with face 43. Said material is then outalong the lines of cutting planes 16 and 18 to form a member 71 and toform an appropriate angllar terminal edge on the remaining length ofsaid material. Members 72, 81, 82, 91 and 92 are then formed byrepeating the procedure just described.

After the horizontal members 61 and 62 ('FIG. 10) of main frame 69 andhorizontal members 71, 72, 81, 82, 91 and 92 of insert frames 70, 80 and90 are cut to the required lengths as previously described, block 30(FIG. 1) and stop 44) are repositioned along guide bar 20 to theposition where pointer 27 is in register with the point on the scale 23of guide bar 20 which indicates a linear value equal to verticaldimension X (FIG. 10) of prime window opening 100.

Spacer blocks 51 and 52 are then removed from their central position onshelf 42 shown in FIG. 8 to the position of FIG. 6 in which said blocksare aligned along and.

adjacent an outer edge of shelf 42. Stop 40 is then slidablyrepositioned along guide bar 20 a sufficient distance to permit a spacerblock 53 to be interposed with opposite faces in contact engagement withface 45 and with the projecting end of screw 35 respectively.

Spacer block (FIG. 9) has an effective Width equal to three times thedifference between the cross-sectional widths of materials used to formmain frame member 61 and 62 plus a suitable fitting allowance. Suitableframing material is then cut in the manner previously described to thelength dimension gauged by the relative positions of material stop face43 and cutting plane 18 (FIG. 1), to form main frame members 63 and 64.

To form vertical members 73, 74, 83, 84, and two members 93 of insertframes 70, 80 and 90, block 30 and stop 40 (FIG. 1) are repositioned, aspreviously described, along guide bar 20 to a position wherein pointer27 is in register with the calibration of scale 23 which indicates alinear value equal to one half of vertical dimension X (FIG. Stop 30 isthen secured to guide bar by means of setscrew 34 as previouslydescribed.

With block secured in position along guide rail 20 as just described andwith spacer block 53 remaining in the last described position on shelf42, spacer block 54 is interposed between spacer block 53 and theforwardly disposed end of spacing screw as shown in FIG. 14.

Spacer block 54 has an effective width equal to one half the sum of therespective cross-sectional effective widths of the extruded materials,from which members 61 and 62 were formed as described above, less onehalf the difference between the cross-sectional widths of said materialsof members 61 and 62 and less a suitable fitting allowance.

With block 30, screw 35, spacer blocks 53 and 54 and stop 4-0 in therelative positions last described, material of similar cross sectionalconfiguration and dimension to that from which horizontal insert framemembers 71, 72, 81, 82, 91 and 92 were formed, as previously described,is cut to the length gauged by face 43 of stop to form said verticalmembers 73, 74, 83, 84, 93 and 94 of insert frames 70, 80 and 90.

Insert frames 70, 80 and 90 are then assembled to the generalconfiguration shown in FIG. 10 and the projecting triangular sections 68and 69 (FIG. 12) are removed from main frame 60. For instance,projection 68 is removed by positioning main frame on surface 15 with astraight side aligned along guide bar 20, with a projection 68 extendingacross cutting plane 17, and by cutting off said projection 68, alongthe outside line of the outer edge of adjacent member 63. Projection 6?is similarly removed.

It is to be understood that the above described embodiments and methodsof my inventions are for the purpose of illustration only, and variouschanges may be made therein without departing from the spirit and scopeof my invention.

I claim:

1. A gauging structure comprising a calibrated guide bar; a primaryblock slidable along said guide bar and securable thereto; means forsecuring the primary block to the guide bar; a material stop forpositioning material being worked on, slidable along said guide bar andhaving a vertically extending spacer engaging face; a spacing screwthreadably engaged in a bore of said primary block and having one endprojecting therefrom toward said spacer engaging face; and a pluralityof spacer blocks interposed between said spacing screw and said spacerengaging face and each having its effective dimension equal to thedifference in the lengths of two standard finished workpieces.

2. A gauging structure comprising a guide bar; a primary stop slidablealong said guide bar and securable thereto; a material stop forpositioning work material, having a material engaging face, a spacerengaging shoulder and a spacer supporting surface, and slidablyembracing said guide bar; a spacing screw in threaded engagement with abore of said primary stop and having an end projecting from said boretowards said spacer engaging shoulder; a plurality of spacer blocks eachhaving two oppositely disposed parallel faces, said blocks beingpositioned upon said spacer supporting surface and interposed 8 betweensaid projecting end of said spacing screw and said spacer engaging face.

3. A gauging structure comprising a calibrated guide bar; a primaryblock slidably secured to said guide bar and having a threaded boreparallel with said guide bar; a material stop slidable longitudinally ofsaid guide bar, having a material engaging face, a spacer engagingshoulder disposed oppositely from such face, and a spacer supportingsurface adjacent to such shoulder; spacer means comprising a pluralityof spacer blocks each having two parallel faces mutually perpendicularto a third side thereof, said spacer means being removably positioned onsaid supporting surface with one said parallel face bearing upon saidshoulder; and a spacing screw threadably engaged within said threadedbore and bearing upon another of said parallel faces.

4. A gauging structure comprising a guide bar formed with at least onelongitudinal guide face, said bar being calibrated in terms of lineardistance as measured along said guide face; a primary block formed witha longitudinal channel in its lower face for embracing said bar, andhaving a threaded lateral bore communicating with :1 lateral outsidewall of said block and with a wall of said channel and also formed witha longitudinal bore; means for releasably securing said block to saidbar; a material stop formed with two mutually perpendicular plane faces,and with a material engaging face lying adjacent to both of saidmutually perpendicular faces so as to be perpendicular to one of suchfaces and to form an acute angle with the other such face, said materialstop being further formed with an upwardly projecting shoulder having aface lying in a plane perpendicular to each of said mutuallyperpendicular faces and disposed oppositely from said material engagingface; a spacer comprising a gauge block, such gauge block being formedwith two mutually parallel plane faces, both said faces beingperpendicular to a third face of said gauge block, said spacer beingpositioned with one said parallel face bearing upon said shoulder face;and an adjusting screw threadably engaged within said longitudinal boreand bearing upon said other parallel face.

5. A gauging structure comprising a guide bar formed with at least onelongitudinal guide face, said bar being calibrated in terms of lineardistance as measured along said guide face; a primary block formed witha longitudinal channel in its lower face for embracing said bar, andprovided with a threaded longitudinal bore and with a threaded lateralbore communicating with a lateral outside wall of said block and with awall of said channel, said block having means comprising a set screwthreadably engaged within said lateral bore for releasably sccuring saidblock to said bar; a material stop formed with two mutuallyperpendicular plane faces, and with a material engaging face lyingadjacent to each of said mutually perpendicular faces so as to beperpendicular to one of such faces and to form an acute angle with theother such face, said material stop being further formed with anupwardly projecting shoulder having a face lying in a planeperpendicular to each of said mutually perpendicular faces and disposedoppositely from said material engaging face; a spacer comprising aplurality of gauge blocks, each such gauge block being formed with twomutually parallel plane faces, both said faces being perpendicular to athird face of said gauge block, said spacer being positioned with onesaid parallel face bearing upon said shoulder face, and an adjustingscrew threadably engaged within said longitudinal bore and bearing uponanother said parallel face.

6. Apparatus for fabricating elements of doors and windows comprising incombination a supporting structure having a table; a cutting means inassociation therewith; a calibrated guide bar secured to said table; aprimary rblock having a threaded bore slidable along said guide bar andsecurable thereto; means for securing said primary block to said guidebar; a material stop for positioning material being Worked on accuratelywith respect to said cutting means, slidable along said guide bar andhaving a vertically extending spacer engaging face; a spacing screwthreadably engaged in a bore of said primary block and having one endprojecting therefrom toward said spacer engaging face; and a pluralityof spacer blocks interposed between said spacing screw and said spacerengaging face and each having its effective dimension equal to thedifference in the lengths of two standard finished workpieces.

7. Apparatus for cutting elements of doors and windows comprising incombination a table having a substantially horizontally disposed planeWork surface formed with a plurality of saw slots each beingperpendicular to the plane of said surface and disposed along straightlines within said plane, all of said lines meeting at a point lyingadjacent to and centrally disposed along longitudinal one edge of saidtable and being at an acute angle to said longitudinal edge; a pluralityof saws operable within said slots; a guide bar formed with at least onelongitudinal guide face, said bar being secured to said work surfacewith said guide face extending parallel with said edge of the table;said bar being calibrated in terms of linear distance as measured alongsaid guide face; a primary block formed with a longitudinal channel inits lower face for embracing said bar, and provided with a threadedlongitudinal bore and with a threaded lateral bore communicating with alateral outside wall of said block and with a wall of said channel, saidblock having means comprising a set screw threadably engaged within saidlateral bore for releasably securing said block to said bar; a materialstop formed with two mutually perpendicular plane faces, and with amaterial engaging face lying adjacent to each of said mutuallyperpendicular faces so as to be perpendicular to one of such faces andto form an acute angle with the other such face, such angle .being theequal to the acute angle between one of said saw slots and saidlongitudinal edge, said material stop being further formed with anupwardly projecting shoulder having a face lying in a planeperpendicular to each of said mutually perpendicular :faces and disposedoppositely fromsa-id material engaging face; a spacer comprising atleast one gauge block, each such gauge block being formed with twomutually parallel plane faces, both said faces being perpendicular to athird face of said gauge block, said spacer being positioned with onesaid parallel face bearing upon said shoulder face, and an adjustingscrew threadably engaged Within said longitudinal bore and bearing uponanother said parallel face.

References Cited in the file of this patent UNITED STATES PATENTS380,134 Smith et al Mar. 27, 1888 438,029 Stnahl Oct. 7, 1890 758,921Jones May 3, 1904 2,374,286 Hargadon Apr. 24, 1945 2,520,837 =HammonAug. 29, 1950 2,613,446 Heimlich Oct. 14, 1952 2,618,300 FreudenthalerNov. 18, 1954 2,695,455 Zweekley et a1. Nov. 30, 1954 2,722,731 Le TarteNov. 8, 1955 2,754,859 Ocenasek July 17, 1956 2,765,525 ONeil Oct. 9,1956 2,799,077 Mitchell July 16, 1957 2,838,078 Cusanza June 10, 1958FOREIGN PATENTS 588,544 Great Britain May 27, 1947 UNITED STATES PATENTOFFICE CERTIFICATE OF CORRECTION Patent No. 3,059,674 I October 23, 1962I- Edgar Jo Boling It is hereby certified that error appears in theabove numbered patent requiring correction and that the said LettersPatent should read as corrected below.

Column 6, line 75, after "block" insert 53 column 9, lines 17 and 18,strike out "longitudinal" and insert same after "one" in line 18, samecolumn 9.

Signed and sealed this 26th day of March 1963.

(SEAL) Attest:

ESTON G. JOHNSON Attesting Officer DAVID L. LADD Commissioner of Patents

